Method for producing high strength sintered silicon carbide
US4541975A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1982 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Jun 15, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/571
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a high strength sintered silicon carbide, the method comprising: molding a mixture of silicon carbide powder and a sintering aid into a green compact of a predetermined shape: preliminarily sintering the green compact to obtain a preliminarily sintered compact having a relative density higher than 80%; charging the preliminarily sintered compact in a HIP equipment without using a capsule; and subject the preliminarily sintered compact to a HIP treatment in a high-temperature and high-pressure N.sub.2 gas atmosphere maintaining a pressure higher than 500 atms and a temperature in the range of 1400.degree.-2300.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.